<template>
<div class="login_container">
       <div class="login_box">
           <div class="avatar_box">
               <img src="../assets/logo.png" alt="">
           </div>
           <div>
               <!-- 登录表单区域 -->
               <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                   <!-- 用户名 -->
                    <el-form-item prop="username">
                        <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user" ></el-input>
                    </el-form-item>
                    <!-- 密码 -->
                    <el-form-item prop="password" >
                        <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" ></el-input>
                    </el-form-item>
                    <!-- 按钮-->
                    <el-form-item  class="btns">
                         <el-button type="primary" @click="login">登录</el-button>
                         <el-button type="info" @click="resetLoginForm">重置</el-button>
                    </el-form-item>
               </el-form>
           </div>
       </div>
    </div>
</template>

<script>
export default {
     data() {
      return {
        //   登录表单数据
        loginForm : {
            username :'admin',
            password :'123456'
        },
        // 这是表单验证
        loginFormRules :{
            //验证用户名是否合法
             username: [
            { required: true, message: '请输入登录名称', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
            //验证密码是否合法
             password: [
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min:6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ]

        }

      }
    },
    methods : {
        //点击重置按钮，重置表单
        resetLoginForm() {
            console.log(this);
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid => {
            if(!valid) return;
            const {data : res}=await this.$http.post('login',this.loginForm);
            if(res.meta.status !== 200) return this.$message.error('登录失败！');
            this.$message.success('登录成功！');
            console.log(res);
            window.sessionStorage.setItem('token',res.data.token);
            return this.$router.push('/home');
            });
    
        }
    }
};
</script>

<style lang="less" scoped>

.login_container {
    background: #2b4b6b;
    height: 100%;
}

.login_box {
    width: 450px;
    height: 300px;
    background: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);

    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background: #fff;
        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: #eee;

         }
    }
}

.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;

}

.btns{
    display: flex;
    justify-content: flex-end;
}
</style>

